Miner&#39;s safety-lamp.



E. A. HAILWOOD.

MINER'S SAFETY LAMP.

APPLICATION FILED mmza, 1907.

Patented Apr. 16, 1912.

5 W, Inventor.-

M 5 2 Ernest A. Jfailwood,

COLUMBIA PLANDGRAPH CO WAS HINGTON. D. c.

iii

ERNEST ARTHUR- I-IAILWOOD, OF MORLEY, ENGLAND.

MINERS SAFETY-LAMP.

Specification of Letters Patent. Patcgntgd Apr, 16, 1912 Applicationfiled January 28, 1907.

Serial No. 354,502.

To all whom it may concern:

Be it known that I, ERNEST ARTHUR HAIL- wooD, a subject of the King ofGreat Britain, residing at 7 Gladstone Terrace, Morley, in the county ofYork, England, late of 3 Blenheim Terrace, Rooms Lane, Morley, in thecounty of York, England, have invented certain new and usefulImprovements in Miners Safety-Lamps, of which the following is aspecification.

In miners safety lamps hitherto constructed the oil vessel or containerhas usually been arranged in or completely surrounding the base of thelamp, it has therefore been found to be impracticable to arrange in thebase of the lamp a glass or lens of such dimensions as to reduce theground shadow to a minimum, especially as regards the ground immediatelyin front of the bearer. Persons skilled in the art will understand thevery limited dimensions a miners safety lamp may take. Anotherobjectionable feature of such lamps is the waste of oil on account ofleakage down the several holes bored in the lamp vessel for thereception of the electric igniting pin and wick raiser, and also due tooil evaporated by reason of the great surface of lamp vessel exposed tothe heat of the flame. Another objection to such lamps is that noprovision has hitherto been made for removing completely the charred orburned portions of the wick.

Now the object of my invention is, in a miners safety lamp to so arrangethe oil vessel, lamp base, magnetic lock, electric igniting device, wickraiser and snuft'er that a lens or glass of comparatively large diametermay be arranged in the base portion of the lamp, so as to permit a greatnumber of rays of light from the burner or burners to pass down throughsuch lens illuminating the ground immediately underneath and in front ofthe lamp, in addition to the light given out horizontally through thevertical cylindrical glass, and this with the minimum loss of oil fromleakage or evaporation. v

The invention includes the novel features of construction andarrangement and combination of parts hereinafter described andparticularly defined by the appended claims.

An embodiment of the invention is illustrated in the accompanyingdrawings, in which the figure represents a sectional elevation of thelamp.

In carrying my invention into effect the base of the lamp consists of acircular metal flanged base ring 1, having a plurality of supportinglegs 2. The inner flange 3 carries a glass lens l of any suitable shape,which lens 4; is secured by threaded ring 5. On the upper part 6 of theflanged base ring lens I place a cylindrical glass 7 of the type usuallyemployed in miners safety lamps. This cylindrical glass carries on itsupper end the flange 8 of the gauze or perforated cone 5), above whichflange 8 I place a flanged metal middle ring 10 having suitable airinlet apertures 11 formed in the horizontal part of same. Supported onthe upper part of such flanged middle ring is the metal outside bonnet12 carrying on its upper surface the hook or handle 18 with which tosupport the lamp. The bonnet is provided with the usual outlet holes 14.Pillars 15 are riveted to middle ring 10, the other ends of such pillarsbeing secured to a threaded metal bush 16, the threads on which ringengage corresponding threads formed on the flanged base ring 1. The oilvessel or container 17 ,-preferably of semiannular shape,may be attachedby any suitable means to one side of the said flanged base ring 1; thewick tube or tubes 18 (formed of metal or insulating material) beingsecured by means of a threaded flanged ring 19 into a recess formed inthe upper face or side of the flanged base ring 1 and oil vessel. Thesaid wick is preferably arranged in such position as to cause the flameto throw rays of light not only through the base lens 4:, but alsothrough the cylindrical glass. A magnetic lock 22 may be fixed in theflanged base ring 1, locking the same to the ring 16 by engaging inteeth 23 of a circular rack formed on the underside of the ring 16.

For the purpose of carrying the current to ignite the wick byelectricity, I place at any convenient spot as, for instance through thevessel 17, an insulator 25, provided with a brass tube 26 in which ametal lighting pin 27 may slide or revolve within certain limits freely.The said insulating lighting pin has an igniting terminal 28 near theextremity of the wick tube 18, and is also shaped or constructed so asto serve as a combined wick raiser and snuffer, and for these purposesis provided with a wick raising arm or projection 30, and a wick snutferarm or projection 30", which latter is adapted, on the rotation of thepart 27, to sweep across the end of the wick and remove burned orcharred portions thereof, and thus maintain a bright light. The partsare kept in proper position by springs 31.

It will be obvious from the shape of the wick raiser and snufferdescribed in this specification, that to bring the required part intoplay it is only necessary to operate the lighting pin when the raisermay be caused to dig into the wick pushing same into the desiredposition, or the snuffer may be caused to pass over the wick removingany burned or charred portions.

To ignite the lamp electrically, the lighting pin or conductor isbrought into connection with a suitable source of electricity (notshown), such as an induced current obtained by passing current fromaccumulators through an induction coil. The current would pass along theinsulated lighting pin or conductor and lighting pin point, sparking tothe Wick tube, igniting the wick and thence forward by means of the lampbody to the other pole of the generator.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a miners safety lamp, in combination, a casing, an oil reservoir,a Wick tube extending from said reservoir within said casing, aninsulating tube passing through said casing, and a combined Wicksnufie'r and lighting pin movably supported within said insulating tube,said combined wick snufi'er and lighting pin being operativelyassociated with the wick in said wick tube.

2. In a miners safety lamp, in combina tion, a casing, an oil reservoir,a wick tube extending from said reservoir within said casing and acombined lighting pin, wick raiser and wick snuffer movably supported bysaid casing and insulated therefrom, said combined lighting pin, wickraiser and Wick snuifer being operatively associated with the wick insaid Wick tube.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

ERNEST ARTHUR I-IAILWOOD.

IVitnesses:

SAM. VVI-IETTALL, WILLIAM Moss TELroRD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents

